Re: [PATCH net-next v2 10/12] selftests: ncdevmem: Run selftest when none of the -s or -c has been provided

[Mina Almasry <almasrymina@google.com>]

On Mon, Sep 30, 2024 at 10:18 AM Stanislav Fomichev <sdf@fomichev.me> wrote:
>
> This will be used as a 'probe' mode in the selftest to check whether
> the device supports the devmem or not.

It's not really 'probing'. Running ncdevmem with -s or -c does the
data path tests. Running ncdevmem without does all the control path
tests in run_devmem_tests(). It's not just probing driver for support,
it's mean to catch bugs. Maybe rename to 'control path tests' or
'config tests' instead of probing.


> Use hard-coded queue layout
> (two last queues) and prevent user from passing custom -q and/or -t.
>
> Cc: Mina Almasry <almasrymina@google.com>
> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
> ---
>  tools/testing/selftests/net/ncdevmem.c | 27 +++++++++++++++++++-------
>  1 file changed, 20 insertions(+), 7 deletions(-)
>
> diff --git a/tools/testing/selftests/net/ncdevmem.c b/tools/testing/selftests/net/ncdevmem.c
> index 900a661a61af..9b0a81b12eac 100644
> --- a/tools/testing/selftests/net/ncdevmem.c
> +++ b/tools/testing/selftests/net/ncdevmem.c
> @@ -688,17 +688,26 @@ int main(int argc, char *argv[])
>                 }
>         }
>
> -       if (!server_ip)
> -               error(1, 0, "Missing -s argument\n");
> -
> -       if (!port)
> -               error(1, 0, "Missing -p argument\n");
> -
>         if (!ifname)
>                 error(1, 0, "Missing -f argument\n");
>
>         ifindex = if_nametoindex(ifname);
>
> +       if (!server_ip && !client_ip) {
> +               if (start_queue != -1)
> +                       error(1, 0, "don't support custom start queue for probing\n");
> +               if (num_queues != 1)
> +                       error(1, 0, "don't support custom number of queues for probing\n");
> +

Remove the start_queue + num_queues check here please. I would like to
be able to run the control path tests binding dmabuf to all the queues
or 1 of the queues or some of the queues.

-- 
Thanks,
Mina